When a piece of stone is dropped in a deep well,the sound of splash is heard 7.7s after it is dropped. If speed of sound is 343 m/s,find the depth of well.
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Speed of sound = 343 m/s
Time = 7.7 s
Therefore, depth of well = Speed * Time = (343*7.7) m = 2641.1 m = 2.6411 km
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